Specific Heat Capacity Converter

Specific Heat Capacity Converter

Convert specific heat capacity (Cp) between kJ/kg·°C, Btu/lb·°F, kcal/kg·°C, and J/g·°C.

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Conversion Factors

Unit	To kJ/kg·°C	From kJ/kg·°C
Btu/lb·°F	× 4.1868	÷ 4.1868
kcal/kg·°C	× 4.1868	÷ 4.1868
J/g·°C	× 1	× 1

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Water Cp Table

Temp (°C)	Cp (kJ/kg·°C)
20	4.1816
100	4.2159
250	4.6780

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Examples

1. Heat Duty
   $Q = \dot{m} C_p \Delta T$
   1000 kg/h, ΔT = 50 °C, Cp = 4.2 → Q = 210 MJ/h

2. Chiller Load
   Cp at 5 °C = 4.202 → 0.5 % more cooling than at 35 °C

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Quick Reference

kJ/kg·°C	Btu/lb·°F	kcal/kg·°C
4.184	1.000	1.000
1.000	0.239	0.239

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Pro Tip: Use temperature-averaged Cp for large ΔT.